Black hole horizons from within loop quantum gravity

Details Black hole horizons from within loop quantum gravity Black hole horizons from within loop quantum gravity

2011-04-25

arxiv.org/abs/1104.4691v3

Phys.Rev.D84:044049,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 10 figures, RevTeX 4.1; v3: corrected typos etc.; now virtually identical with published version

Scientific paper

10.1103/PhysRevD.84.044049

In general relativity, the fields on a black hole horizon are obtained from those in the bulk by pullback and restriction. Similarly, in quantum gravity, the quantized horizon degrees of freedom should result from restricting, or pulling-back, the quantized bulk degrees of freedom. This is not yet fully realized in the - otherwise very successful - quantization of isolated horizons in loop quantum gravity. In this work we outline a setting in which the quantum horizon degrees of freedom are simply components of the quantized bulk degrees of freedom. There is no need to quantize them separately. We present evidence that for a horizon of sphere topology, the resulting horizon theory is remarkably similar to what has been found before.

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